I agree with the above statement as thing which Google don't want to share with people outside of official channels don't get to reach people with secondary sources.. Like I can't find Google Developer Conference 2015 Day2 Channel 2 -3 etc videos outside of official Youtube channel outside in various secondary sources of sharing things over internet. I found the Apple WWDC 2015 video over secondary sources but not the Google's.... This proves that Google controls the internet.
Correlation does not imply causation... Good reading for you: https://en.wikipedia.org/wiki/Correlation_does_not_imply_causation
That's the old battle agains empiricists. The point is that that's true in physical reality, not in search engines. I think it's less drastic then a simple :Google owns the internet. But I think putting it like that makes it closer to the truth.